<%
/**
 *      检测Request的值,如果为null，警告并退出
 *      @ param: requestKey  
 *      @ param: alertMessage  警告内容
 *  $Author: amon_lei $
 *  $Date: 2004/12/17 13:10:28 $
 *  $Revision: 1.1 $ 
 *  created in 2004-12-12
 *
 *
 */
%>
<%
        if(request.getParameter(requestKey) == null)
        {
                %>
                        <%@ include file = "_alert_js.jsp"%>
                <%
                return;
        }
%>
